Improvement in sewing-machine needles



1.1. SIBLEY.

j Sewing-Machine Needle. No. 112,744.

Patented March 14, 1371.

aw [@12 1&3. V2 zfl Witnesses: Inventor:

UNITED STATES PATENT OFFICE.

JOHN J. SIBLEY, OF NEW YORK, N. Y.

IMPROVEMENT IN SEWING-MACHINE NEEDLES.

Specification forming part of Letters Patent No. 112,744, dated March14, 1871.

To all whom it may concern:

Be it known that I, JOHN J. SIBLEY, of New York city, in the county andState of New York, have invented a new and useful Improvement inSewing-Machine Needles; and I do hereby declare that the following is afull and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

My invention relates to a sewing-machine needle adapted particularly tosewing leather, but also adapted to sewing other articles; and itconsists in giving the body of the needle the form of a rhombus, ornearly so, from about opposite the eye to such a point above as willcomprise all that portion of the needle that touches, in itsreciprocations, the material. From about opposite the eye downward thepoint of the needle is flattenechand the body of the needle is providedwith grooves, as shown.

Figure 1 shows the side of the needle having the short groove 5 Fig. 2,the opposite side; Fig. 3, an edge view. Fig. 4 is a sectional viewabove the eye, showing the form thereof 5 and Fig.5 is a view of a lineof stitching, 1), produced by my needle, and a line, 0, pro- .duced by aneedle of ordinary construction.

In sewing, it is extremely desirable to make the hole for the thread assmall as possible, in order that the material will itself close on thethread when the needle is withdrawn, and in sewing leather, &c., tobringthe stitches close together and avoid the tendency of the needlecutting the material lying between the perforations made by it.

Needles have been made flat, so as to cut a slit-like opening diagonallyto the line of stitch- 7 ing; but such needles, above the eye, havealobjectionable.

My needle is grooved and flattened at the point in substantially thesame way, but from the eye upward the acting surface is shaped like arhombus, the gist of the invention bein g that the acute-angled portionsof my needle having this shape lie in a line with the edges of theflattened point of the needle, and the sides of the needle act only toforce the slit apart gradually.

I am aware that saddlers awls have been shaped substantially like myneedle, and that hand-needles have been made near their pointstriangular; but those I disclaim, as they could not be used formachine-sewing and to carry a thread.

Having described my invention, I claim- As a new article of manufacture,the sewing-machine needle herein described, having the form and groovedas set forth.

' JOHN J. SIBLEY.

Witnesses:

ELLIOTT P. WEST, FRANK GILLEsPIE.

